"He that writes of himself, not easily tir'd"

From Colley Cibber, An Apology for the Life of Mr. Colley Cibber, Comedian:

It often makes me smile, to think how contentedly I have sate myself down, to write my own Life; nay, and with less Concern for what may be said of it, than I should feel, were I to do the same for a deceas'd Acquaintance. This you will easily account for, when you consider, that nothing gives a Coxcomb more Delight, than when you suffer him to talk of himself; which sweet Liberty I here enjoy for a whole Volume together! A Privilege, which neither cou'd be allow'd me, nor wou'd become me to take, in the Company I am generally admitted to; but here, when I have all the Talk to myself, and have no body to interrupt or contradict me, sure, to say whatever I have a mind other People shou'd know of me, is a Pleasure which none but Authors, as vain as myself, can conceive.